发明名称 |
OPTICAL MOTION SENSOR |
摘要 |
An optical motion sensor is provided for monitoring movement of a mechanical device, particularly such as an infusion pump of the type used for controlled delivery of medication to a patient. The motion sensor includes a disk member mounted upon a selected mechanical output component driven by the infusion pump, such that the disk member undergoes displacement during normal pump operation. The disk member defines a pattern of reflective and substantially nonreflective surface zones which are alternately illuminated by a light source during normal pump operation. A light detector responds to the level of reflection from the disk member to provide an output signal which varies according to disk member displacement. This output signal is connected to a controller for comparison with drive signals supplied to the infusion pump, to verify proper mechanical output operation of the pump.
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申请公布号 |
CA2038841(C) |
申请公布日期 |
1996.05.14 |
申请号 |
CA19912038841 |
申请日期 |
1991.03.22 |
申请人 |
MINIMED INC., DOING BUSINESS AS MINIMED TECHNOLOGIES |
发明人 |
COLMAN, FREDRIC C.;PURVIS, RICHARD E. |
分类号 |
A61M5/00;A61M5/145;G01P3/486;G01P13/00;(IPC1-7):G01N21/84;G01P13/02 |
主分类号 |
A61M5/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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